August 2024 TS - IAQ and Inferential Statistics (Pre-test)

Which of the following statement(s) correctly describe the criteria for acceptable indoor air quality (IAQ) based on ASHRAE Standard 62? You may select more than one answer.

• There are no know contaminants at harmful concentrations.

• At least 50% of the indoor space meets regulatory safety standards.

• Continuous natural ventilation is used to reduce the concentration of indoor contaminants.

• A substantial majority, at 80% or more, do not express dissatisfaction with their comfort levels.

Select all correct statements about asbestos.

• The Philippines has a complete ban on asbestos as issued by the Department of Environment and Natural Resources (DENR).

• Chrysolite (white) asbestos is banned in the Philippines for use in all products and applications.

• In the United States of America, although there is no general ban, asbestos is regulated as a hazardous air pollutant under their Clean Air Act of 1970

• In Southeast Asia, only Brunei has completely banned the use of asbestos.

What does the acronym “SBS” stand for in the context of IAQ which refers to a set of symptoms experienced by occupants in a building where no specific illness or cause can be identified, but symptoms improve upon leaving the building?

• Seoul Broadcasting System

• Symptomatic Building Syndrome

• Sick Building Syndrome

• Structural Building Syndrome

Complete the statement:
When the body temperature is higher than 37^oCelsius, the __________ detects heat and the cooling mechanism takes place, which involves __________ skin blood flow and sweating.

• hypothalamus, increasing

• skin, increasing

• hypothalamus, decreasing

• skin, decreasing

Complete the statement:
Non-uniform thermal radiation from hot and cold surfaces can cause local thermal discomfort. ________ and ________ generally cause the greatest thermal discomfort.

• warm ceiling, warm walls

• warm ceiling, cold walls

• cold ceiling, warm walls

• cold ceiling, cold walls

You do not feel comfortable staying in your apartment. After analyzing the apartment, the facility management professional reported that this is due to local thermal discomfort. Given the following conditions, which aspect(s) should you primarily look into in order to resolve the local discomfort? You may select more than one.

Room temperature = 26^oC
Ceiling temperature = 43^oC
Relative humidity = 40%
Floor temperature = 30^oC

• Draught

• Radiation Asymmetry

• Vertical Air Temperature Differences

• Floor Temperature

True or False:
You have surveyed a sample of Philippine households about waste segregation, in which 840 respondents out of 1,000 are not segregating their waste. Therefore, you can already claim that 84% of the households in the Philippines are not segregating their waste.

• True

• False

Which of the following is the highest level of measurement which has a true or meaningful zero?

• Nominal

• Ordinal

• Interval

• Ratio

In the standard formula for computing the sample size for waste analysis and characterization study (WACS) based on the WACS Manual of the National Solid Waste Management Commission (NSWMC), is the value of “p” a constant or is it a variable? Select the most appropriate answer.

• p is a constant and is always set to 0.20

• p is a constant and is always set to 0.30

• p is a variable which can be adjusted to increase or decrease the number of samples for convenience and resource considerations

• p is a variable which can be adjusted by the entity conducting WACS based on their experience

True or False:
In the t-test statistic, the distribution curve approaches a normal distribution curve as the degrees of freedom increase.

• True

• False